Water-closet bowl



B. O. TILDEN.

WATER CLOSET BOWL.

APPLICATION FILED FEB. 16. 1920.

Patented Dec. 14, 1920.

UNITED STATE OFFICE.

BERT O. TILDEN, OF TRENTON, NEW JERSEY, ASSIGNOR T6 AMERICAN SANITARY WORKS, 0F TRENTON, NEW

JERSEY, A CGRPORATION OF NEW JERSEY.

WATER-CLOSET BOWL.

Specification of Letters Patent.

Patented Dec. 14, 1920.

Application filed February 16, 1920. Serial No. 358,923.

To all whom it may concern Be it known that I, BERT O. TILDEN, a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in later-Closet Bowls, of which the following is a specification.

This invention relates to improvements in water closet bowls of the siphon jet type, and has for its object to provide a novel jet structure in combination with a siphon structure wherein the flushing stream is directed in a zigzag course relatively to the longitudinal axis of the bowl, and whereby the jet is directed at an angle to the said axis for quickening and strengthening the siphonic action, as well as for thoroughly cleansing the bowl.

My invention is illustrated in the accompanying drawing, and then described in detail in the subjoined specification.

Figure 1 is a top-plan view of the closet bowl. Fig. 2 is a vertical longitudinal section, taken on line 22 of Fig. 1. Fig. 3

is a vertical cross-section, taken on line 33 of Fig. 2. And Fig. 4- is a horizontal sec tion, taken on line H of Fig. 2.

The bowl 2, which has been selected to best show the embodiment of my improvement, is what is known to the trade as a reversetype siphon jet closet bowl, having the usual flushing rim 8, which communicates with a flushing inlet chamber 3' located at the rear end of the fixture. 4E designates the up or intake leg of the siphon structure, by which the bowl is vented and emptied. 5 is the discharge or down leg of said structure, which intersects the discharge end of the leg 4 at the terminal of the usual dam 6, the said point of intersection being usually understood as the dam chamber, and is indicated at 6. The lower end of the leg 5 is provided with a substantially horizontal ledge or deflecting surface 7, which may surround or partially surround the central discharge outlet 8. The ledge 7 in thistype of closet bowl alfords an abrupt splashing surface which temporarily retards the initial flow of the flushing stream until what is commonly known as the water plug forms above said surface, and falling, carries out through the opening 8, the air which is generally present in the lower portion of the down leg 5. The sudden ejection of the air at this point, causes the rarefying of the air in the upper portion of the down leg 5, which sets up the siphonic action necessary for emptying and cleansing the bowl 2.

Heretoforc, in closet bowls of the present general type, the axes of the intake and the discharge legs were normally positioned in a common vertical plane which corresponded to the line of the longitudinal axis of the bowls, as indicated by the broken line 2 in Fig. 1, and the line 2 in Fig. 8, and in these older closet bowls, the up and down flow of the water during the flushing periods has invariably followed this common plane and line. The dams of these older closets, corresponding to the part 6 of the present case, were provided with substantially flat terminals, over which the water from the bowls flowed in a substantially straight or direct J course along the line of said axis, and in order to reach the ledges (7) the flushing water either followed the front and rear walls of the discharge legs, or else cascaded straight downwardly until it struck the said splashing surface.

In the present bowl, the vertical axis of the dam chamber 6' is arranged eccentric to the longitudinal axis of the bowl 2, and this is accomplished by bulging the wall at one end of said chamber outwardly and laterally, as at 4 and 5, as well as by positioning the wall 9 at the opposite end of the dam chamber closer to the longitudinal axis of the bowl. By this lateral displacement of the dam chamber without changing the positions of the forward end of the intake leg t, or the lower end of the discharge leg 5, produces a lateral swerving of the discharge passage, and causes a pronounced diversion of the main body of the flushing water toward said bulging wall 4 and awa from said longitudinal axis. After the water passes beyond the dam 6, it is again directed toward the said longitudinal axis by the bulging portion 5 with suflicient force to cause it to leap or shoot across the bore of the down leg 5, as indicated by the broken line 5 in Fig. 3. The water striking against the opposite side of the down leg 5, then falls upon the ledge 7, and splashes upwardly in a shower or spray, which continues until the water plug falls through the opening 8, as described. A smaller portion of the water rising from the bowl 2,

end of the fixture.

is guided straight over the dam 6 by the vertical wall 9, and this portion of the water 7 in descending from the dam, unites with the main body which is following the said bulge, approximately at the point where the latter leaps across the leg 5. These two portions of the water thus uniting at the choke 00 of the down leg, prevents the air in the lower end of said leg from rising and retarding or preventing the formation of the vacuum which produces the siphonic action.

At the opposite side of the dam chamber 6", the inner wall 9 is formed substantially vertically, and extends in this manner from near the forward end of the intake leg 4, past the dam 6, and thence downwardly in the leg 5 and terminates at the medial portion 5". In order not to materially increase the capacity of the dam chamber, the plane vertical wall 9 is disposed closer to the line of the longitudinal axis of the bowl, and this, together with the pronounced bulging of the dam chamber at t'5, gives a lopsided or unbalanced appearanceto the rear In order to conceal this distortion and preserve the symmetry and ornamental aspect of the fixture at this point, a similar outwardly bulging wall 9, of the same relative thickness as the walls 1, 5 and 9, is molded on to the side adjacent the wall 9, in such manner that a hollow space or chamber 9 occurs between the walls 9 and 9. The chamber 9 extends forwardly and downwardly to a point slightly below the lowest level of the bowl 2, as shown by dotted lines in Figs. 2, 3 and 4.

In addition to the fore oing features, the present bowl is equipped with novel and simple means for producing what is-co1nmonly known as the siphon jet, which is employed generally in the well-known washdown or siphon jet types of closet bowls, but which is also frequently employed in the plain siphon action bowls, for starting, and quickening or accelerating the siphoning and flushing of the bowls. In the present case,

- the water for the jet is drawn from the flushing chamber 3 at the rear end of the rim 8, by means of an ample port or passage 10,

v which conducts the water into the top of the chamber 9 The water then gravitates to the bottom of said chamber, from whence it passes directly into the central bottom portion of the bowl 2 by means of a duct 11 and a nozzle 12, the latter being arranged to deliver a strong jet of water in the direction of the intake leg 4. By this means the out-flow of the contents of the bowl 2 starts at the instant the first of the flushing supply enters the rim and bowl. The nozzle 12 is disposed at such an angle to the longitudinal axis of the bowl 2 as to direct the jet of water toward the bulge 4: m-5 of the dam chamber. By this disposition and arrangement of the nozzle 12, the main body of the water is quickly and positively started on its zigzag course, asdescribed, and the jet keeps up a strong current until the flushing supply is exhausted and the closet is thoroughly emptied and cleansed. The water for the jet being drawn from the relatively large lateral chamber 9 enters the bottom of the bowl under a strong head and with little resistance or noise, and therefore acts with greater promptness and strength than many of the older jets, which lose much of their force and effectiveness because thejet supply travels through a number of tortuous, and more or less restricted passages. By the combination of the jet feature with the novel siphon construction herein shown and described, I am able to flush the closet readily, quickly and effectively with a relatively small amount of water, and by providing the zigzag course for the outflow of the contents of the bowl and disposing of the nozzle 12 at an angle as described, the siphoning is more powerful, and continuous, and less noisy, than any other type of siphon jet structure known to me.

Having thus described my invention, what I claim, is

1. In a siphon jet water closet, the combination of the bowl with a siphon structure having a dam chamber disposed eccentric to the vertical plane which coincides with the longitudinal aXis of the rim of the bowl, one wall of said dam chamber being vertical, said structure having a lateral chamber separated from the dam chamber and the intake leg by said wall, said lateral chamber adapted to receive and to conduct a portion of the flushing water beneath the bottom of the bowl, and a nozzle communi eating with said lateral chamber and mounted on the bottom of the bowl and arranged at such an angle as to deliver a jet of water toward one end of said dam chamber.

2. In a siphon jet water closet, the combination of the bowl with a siphon structure having an intake and a discharge leg and a dam chamber at the intersection of said legs, one end of said dam chamber being disposed closer to the vertical plane which coincides with the longitudinal axis of the rim of the bowl than the other end, said structure adjacent one end of said dam chamber having a lateral chamber adapted to receive and to conduct a portion of the flushing water parallel to the intake leg and to deliver said water to the bottom of the bowl through a transverse duct, and a nozzle disposed at an angle to said plane adapted to shoot a jet of the water toward the remote end of said dam chamber.

3. In a water closet, the combination of intersect at the terminal of the dam, the wall at one side of said legs being bulged outwardly for diverting the flushing stream away from the vertical plane which coincides with the longitudinal axis of the rim of the bowl, the opposite wall being vertical, a laterally bulging wall disposed beyond said vertical wall and spaced therefrom to provide a chamber adapted to receive and to conduct a portion of the flushing water forwardly and downwardly to the bottom of the bowl, and a nozzle imposed upon the bottom of the bowl adapted to receive the water from said chamber and to deliver a jet of said water into the intake leg at an angle to the vertical wall.

l. In a water closet, the combination of the bowl with the intake leg, the discharge leg and the dam chamber at the intersection of said legs, one lateral side of said dam chamber comprising a plane wall disposed parallel to the vertical plane which coincides with the longitudinal axis of the rim of the bowl, a laterally bulging wall molded to the outer surface of said plane wall and spaced therefrom to provide a lateral chamber adapted to supply the water for a siphon jet, said lateral chamber communicating with the bottom of the bowl by a transverse duct, and a nozzle forming the discharge end of said duct, said nozzle disposed at an angle to said vertical plane and adapted to direct a jet of water up said intake leg for diverting the main flushing stream laterally away from said plane wall.

In testimony whereof I aflix my signature.

BERT O. TILDEN. 

